To change your contact information, sign in to the Developer Console, go to Settings > My Account, and then click Edit to change your name, email, phone number, or password. If you do not have administrator permissions, ask the account administrator to make the changes.
There is also additional account information an administrator can update in the Settings, including the Company Profile, Payments and Benefits, Tax Identity, and User Permissions.
For more info, please see our guide to Change your contact information: